Grate



(No Model.)

W. H. PAGE.

GRATE.

Patented Oct. 15, 1895.

13 i h mono M. PNOTUUTHOWASHINGTUKDJI.

A'rnN'r smote.

WILLIAM H. PAGE, OF BASIC CITY, VIRGINIA.

0. RATE.

SPECIFICATION forming part of Letters Patent No. 547,802, dated October15, 1895. Application filed November 23,1894. Serial No. 529,732. (Nonioan.)

To all whom it may concern:

Be it known that 1, WILLIAM 11. PAGE, of Basic Oity, Augusta county,Virginia, have invented certain new and useful Improvements in Grates,of which the following is a specification, reference being had to the accompanying drawings.

The object of my invention is to produce an improvedltuoular grateconstructed so as to be used without special adaptation in any ordinaryfireplace and to utilize by the aid of its tubes the heat of the firewithin it to heat and set in motion aheating mediumas, for example, airor water contained within the tubes.

In the accompanying drawings, Figure I is a front view of a preferredform of my grate set in a fireplace. Fig. II is an end view thereof withthe fireplace detached.

Referring to the figures on the drawings, 1 indicates the front part ofmy grate, 2 the bottom part, 3 the back part, and 4 the hood, withwhich, preferably, my grate is provided, and which consists of acontinuation of the back part above and preferably across the upper partof the grate.

My grate is constructed of a continuous metallic tube, the branchesthereof having no communication with one another, except endwise, andthe entire grate being provided with a single inlet-pipe 6 and a singleoutletpipe 7.

The front, bottom, back, and hood of the grate, which constitute itsdifierent elements,

may be united by suitable bends 8. By the term a continuous tube I donot mean that the parts may not be made of separate pieces and joinedtogether, but only that the grate, when united, is provided with acontinuous tubular passage extending through it from one side to theother. Therefore the bends 8 may be, in fact, coupling-pieces unitingthe front, bottom,'and back bars together.

' The inlet-pipe and the discharge-pipe are 10- cated both at the frontof the grate, so that the back part is unobstructed. By this arrangementthe grate is adapted to be set inplace in any ordinaryfireplacefprecisely as if it were a grate of ordinary construction madeof solid bars. The inlet-pipe preferably communicates with a source ofpure-air supply and is preferably provided with a valve 9. Inasmuch asthe valve 9 would be difierently constructed if water were employed inthe grate, instead of hot air, it is merely diagrammatically indicatedin the drawings, and I here specify that its construction may be of anyusual and ordinary pattern adapted for the purpose. The discharge-pipemay communicate with any suitable steam or hot air circulating system,which is not illustrated, inasmuch as it forms no feature of my presentinvention and may be of any ordinary and well-known construction.

In practice the grate is sustained in the fireplace either by hooks orlegs like any other grate, and the fire is built in the bottom thereof.As soon as the tubular bars of the grate become heated, at current ofthe heating medium (whether it is steam or air) is set up within thepassages of the bars and is discharged through the discharge-pipe 7. Ifair is employed as the heating medium, a constant supply is drawnthrough the inlet-pipe 6.

The design in making the grate of a single continuous tube has for itsfoundation the fact that the air drawn in through the inletpipe beinggradually heated as it passes through the grate, and its temperaturebeing raised in each successive tube, it becomes at last highly rarefiedand is discharged with great velocity from the discharge-pipe 6. In thisrespect my grate differs from tubular grates having separateinter-communicating tubes, inasmuch as the employment of such separatetubes produces conflicting and counteracting currents which hinder andimpair, rather than promote, the efiicient operation of the grate.

What I claim is- 1. A grate consisting of a continuous tube constitutinga series of bars, each of said bars communicating at'one extremity withthe bar preceding and at its other extremity with the bar nextsucceeding, said bars being bent to form the front, bottom, back andhood of the grate whereby the circulating medium is pro= vided acontinuous passage from one side of the fireplace to the other,substantially as specified.

2. A grate consisting of a single continuous tube forming the front,bottom, back and hood of the grate, the front and back bars beingvertically disposed, and the inlet and inlet pipe communicating with thegrate at outlet pipes beinglocated at the opposite ends the bottom ofthe front thereof, and the outof the front of the grate and in differentlet pipe communicating with the front of the planes, substantially asspecified.

3. A grate consisting of a single continuous tube, the front, bottom,back and hood bars arranged as continuations of each other in the samevertical plane, the adjacent parallel bars being connected by bendslocated 10 alternately at the top of the front bars and at the forwardextremity of the hood bars, the

grate at a point above the hood, substantially 15 as specified.

In testimony of all which I have hereunto subscribed my name.

WILLIAM H. PAGE. Witnesses:

F. M. WHITE, T. M. HUGHSON.

